Abstract
In the present work YVO4:Er3+ nano phosphors are synthesized for different concentrations of erbium and at different calcination temperatures. X-ray diffraction, Fourier transform infrared spectroscopy, UV–visible spectroscopy and photoluminescence (PL) spectroscopy are used for the characterization of the YVO4:Eu3+ nano- phosphors. It is observed that the crystallite size decreases with the rise in the erbium concentration and increases with the calcination temperature. The phosphor synthesized at 2 mol % exhibit sharp peaks with maximum intensity, when excited with 325 nm. The PL study at different calcination temperature shows that the luminescence properties of nano phosphors are improving with the rise of calcination temperature. The study concludes that up to 2 mol % concentration of erbium, the luminescence intensity rises, then decreases for further increase in the erbium concentration. The results are useful for understanding the role of the Er concentration in YVO4 host. Also it concludes strong emission at prolonged temperature and is suitable candidate for the display applications.
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Acknowledgments
The authors thank to NIT Hamirpur for providing the financial assistance as well as experimental facilities to carry out the present work. The author sends the gratitude to the Department of higher Education, Government of Himachal Pradesh for granting the study leave to one of the author.
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Thakur, S., Gathania, A.K. Investigation of optical properties of YVO4–Er3+ nano-phosphors at different Er3+ concentrations and calcination temperatures. J Mater Sci: Mater Electron 27, 1988–1993 (2016). https://doi.org/10.1007/s10854-015-3982-3
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DOI: https://doi.org/10.1007/s10854-015-3982-3